@MamaBear16 thanks! He does know some kids in the BC class. Even the ones who did well in Pre-Calc H said that BC moves very fast. Maybe half of the kids who got As in Pre Calc H ended up with Bs in BC Calc. The dept chair told us that AB and BC are practically the same for the first quarter, then BC starts to pick up the pace since that class has to cover more material. One friend whose son is currently taking BC with a heavy load of APs barely got a B-minus last semester. It’s always so hard to know how it will go for each student since each one is different. My gut says that he should stick with AB. If he needs calc in college, we would probably have him start from scratch anyway since testing out with an AP test and moving up to the next level in college seems to be a recipe for disaster. I took BC as a high school student and started out an engineering major. I tested out of two quarters of Calc and was placed into an impossible class. Ended up with a C. …and changed my major soon after that! 